Display apparatus

ABSTRACT

A display device includes a display panel including a front substrate and a back substrate, a backlight unit disposed in the rear of the display panel, and a plurality of brackets attached to a non-display area of a back surface of the display panel. Each of the plurality of brackets includes a first portion and a second portion positioned between the first portion and the back substrate. A width of the second portion is greater than a width of the first portion. The second portion is positioned adjacent to the back substrate.

This application claims the benefit of Korean Patent Application Nos.10-2010-0105548 and 10-2010-0105569 both filed on Oct. 27, 2010 and U.S.Provisional Application No. 61/407,919 filed on Oct. 29, 2010, which areincorporated herein by reference for all purposes as if fully set forthherein.

BACKGROUND OF THE INVENTION

1. Field of the Invention

Embodiments of the invention relate to a display device.

2. Discussion of the Related Art

With the development of the information society, various demands fordisplay devices have been increasing. Various display devices, such asliquid crystal displays (LCDs), plasma display panels (PDPs),electroluminescent displays (ELDs), and vacuum fluorescent displays(VFDs), have been recently studied and used to meet various demands forthe display devices. Among the display devices, a liquid crystal displaypanel of the liquid crystal display includes a liquid crystal layer, anda thin film transistor (TFT) substrate and a color filter substrate thatare positioned opposite each other with the liquid crystal layerinterposed therebetween. The liquid crystal display panel displays animage using light provided by a backlight unit of the liquid crystaldisplay.

SUMMARY OF THE INVENTION

In one aspect, there is a display device including a display panelincluding a front substrate and a back substrate, a backlight unitdisposed in the rear of the display panel, and a plurality of bracketsattached to a non-display area of a back surface of the display panel,each of the plurality of brackets including a first portion and a secondportion positioned between the first portion and the back substrate, awidth of the second portion being greater than a width of the firstportion, the second portion being adjacent to the back substrate.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the invention and are incorporated in and constitute apart of this specification, illustrate embodiments of the invention andtogether with the description serve to explain the principles of theinvention. In the drawings:

FIGS. 1 to 3 illustrate a configuration of a display device according toan example embodiment of the invention;

FIGS. 4 to 60 illustrate a display device according to an exampleembodiment of the invention;

FIGS. 61 to 72 illustrate another configuration of a display deviceaccording to an example embodiment of the invention;

FIGS. 73 to 75 illustrate an exemplary configuration of a backlightunit;

FIGS. 76 to 91 illustrate another method for disposing an optical layer;

FIGS. 92 to 104 illustrate another configuration of a display deviceaccording to an example embodiment of the invention;

FIG. 105 schematically illustrates an example of a broadcasting systemincluding an image display equipment according to an example embodimentof the invention; and

FIG. 106 illustrates another example of an image display equipmentaccording to an example embodiment of the invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Reference will now be made in detail embodiments of the inventionexamples of which are illustrated in the accompanying drawings. Sincethe present invention may be modified in various ways and may havevarious forms, specific embodiments are illustrated in the drawings andare described in detail in the present specification. However, it shouldbe understood that the present invention are not limited to specificdisclosed embodiments, but include all modifications, equivalents andsubstitutes included within the spirit and technical scope of thepresent invention.

The terms ‘first’, ‘second’, etc. may be used to describe variouscomponents, but the components are not limited by such terms. The termsare used only for the purpose of distinguishing one component from othercomponents. For example, a first component may be designated as a secondcomponent without departing from the scope of the present invention. Inthe same manner, the second component may be designated as the firstcomponent.

The term “and/or” encompasses both combinations of the plurality ofrelated items disclosed and any item from among the plurality of relateditems disclosed.

When an arbitrary component is described as “being connected to “or”being linked to” another component, this should be understood to meanthat still another component(s) may exist between them, although thearbitrary component may be directly connected to, or linked to, thesecond component. In contrast, when an arbitrary component is describedas “being directly connected to” or “being directly linked to” anothercomponent, this should be understood to mean that no component existsbetween them.

The terms used in the present application are used to describe onlyspecific embodiments or examples, and are not intended to limit thepresent invention. A singular expression can include a plural expressionas long as it does not have an apparently different meaning in context.

In the present application, the terms “include” and “have” should beunderstood to be intended to designate that illustrated features,numbers, steps, operations, components, parts or combinations thereofexist and not to preclude the existence of one or more differentfeatures, numbers, steps, operations, components, parts or combinationsthereof, or the possibility of the addition thereof.

Unless otherwise specified, all of the terms which are used herein,including the technical or scientific terms, have the same meanings asthose that are generally understood by a person having ordinaryknowledge in the art to which the present invention pertains. The termsdefined in a generally used dictionary must be understood to havemeanings identical to those used in the context of a related art, andare not to be construed to have ideal or excessively formal meaningsunless they are obviously specified in the present application.

The following embodiments of the present invention are provided to thoseskilled in the art in order to describe the present invention morecompletely. Accordingly, shapes and sizes of elements shown in thedrawings may be exaggerated for clarity.

Hereinafter, a liquid crystal display panel is used as an example of adisplay panel. Other display panels may be used. For example, a plasmadisplay panel (PDP), a field emission display (FED) panel, and anorganic light emitting diode (OLED) display panel may be used.

FIGS. 1 to 3 illustrate a configuration of a display device according toan example embodiment of the invention.

As shown in FIG. 1, a display device according to an example embodimentof the invention may include a display panel 100, a backlight unit 10Bincluding an optical layer 110, a light source 120, a back cover 130,and a bracket 140.

Although not shown, the display panel 100 may include a front substrateand a back substrate that are positioned opposite each other. Thebracket 140 may be attached to a back surface of the back substrate ofthe display panel 100.

The optical layer 110 may be fixed to the bracket 140. The optical layer110 may include a plurality of sheets. For example, although not shown,the optical layer 110 may include at least one of a prism sheet and adiffusion sheet.

The backlight unit 10B may be positioned in the rear of the opticallayer 110. Although not shown, the backlight unit 10B may furtherinclude a frame as well as the light source 120. In the embodimentdisclosed herein, the backlight unit 10B includes the light source 120,the optical layer 110, and the frame (not shown). However, the backlightunit 10B may include a light guide plate (not shown). Further, in theembodiment disclosed herein, the backlight unit may be used as the lightsource 120 and thus may indicate the light source 120. In other word,the backlight unit 10B may be referred to as the light source. Theconfiguration of the backlight unit may be variously changed.

Various types of light sources 120 may be used in the embodiment of theinvention. For example, the light source may be one of a light emittingdiode (LED) chip and a LED package having at least one LED chip. In thisinstance, the light source may be a colored LED emitting one of red,green, and blue light or a white LED.

The back cover 130 may be positioned in the rear of the backlight unit10B. The back cover 130 may protect the backlight unit 10B and theoptical layer 110 from the outside.

The optical layer 110 may be closely attached to the display panel 100.Alternatively, the backlight unit 10B may be closely attached to theoptical layer 110. In this instance, a thickness of the display deviceaccording to the embodiment of the invention may be reduced.

As shown in FIG. 2, the display panel 100 may include a front substrate101 and a back substrate 111, that are positioned opposite each otherand are attached to each other to form a uniform cell gap therebetween.A liquid crystal layer 104 may be formed between the front substrate 101and the back substrate 111. A seal part 200 may be formed between thefront substrate 101 and the back substrate 111 to seal the liquidcrystal layer 104.

A color filter 102 may be positioned on the front substrate 101 toimplement red, green, and blue colors. The color filter 102 may includea plurality of pixels each including red, green, and blue subpixels.Other configurations of the subpixels may be used for the pixel. Forexample, each pixel may include red, green, blue, and white subpixels.When light is incident on the color filter 102, images corresponding tothe red, green, and blue colors may be displayed.

A predetermined transistor 103, for example, a thin film transistor(TFT) may be formed on the back substrate 111. The transistor 103 mayturn on or off liquid crystals in each pixel. Thus, the front substrate101 may be referred to as a color filter substrate, and the backsubstrate 111 may be referred to as a TFT substrate.

The display panel 100 may include a front polarizing film 3400 and aback polarizing film 3410. The front polarizing film 3400 may bepositioned on a front surface of the front substrate 101 to polarizelight passing through the display panel 100. The back polarizing film3410 may be positioned on a back surface of the back substrate 111 topolarize light passing through the optical layer 110 positioned in therear of the back substrate 111. In the embodiment disclosed herein, thefront polarizing film 3400 may be referred to as a first frontpolarizing film, and the back polarizing film 3410 may be referred to asa second front polarizing film.

The liquid crystal layer 104 may be formed of a plurality of liquidcrystal molecules, and the arrangement of the liquid crystal moleculesmay change in response to a driving signal supplied by the transistor103. Hence, light provided by the backlight unit may be incident on thecolor filter 102 in response to the molecular arrangement of the liquidcrystal layer 104.

As a result, the color filter 102 may implement red, green, and bluelight, and thus a predetermined image may be displayed on the frontsubstrate 101 of the display panel 100.

As shown in FIG. 3, each pixel of the display panel 100 may include datalines 300, gate lines 310 crossing the data lines 300, and the TFT 103connected to crossings of the data lines 300 and the gate lines 310.

The TFT 103 supplies a data voltage supplied through the data lines 300to a pixel electrode 320 of a liquid crystal cell Clc in response to agate pulse from the gate lines 310. The liquid crystal cell Clc isdriven by an electric field generated by a voltage difference between avoltage of the pixel electrode 320 and a common voltage Vcom applied toa common electrode 330, thereby controlling an amount of light passingthrough a polarizing plate. A storage capacitor Cst is connected to thepixel electrode 320 of the liquid crystal cell Clc and holds a voltageof the liquid crystal cell Clc.

Since the above-described structure and the above-describedconfiguration of the display panel 100 are only one example, they may bechanged, added, or omitted.

FIGS. 4 to 60 illustrate a display device according to an embodiment ofthe invention.

As shown in FIG. 4, an adhesive layer 400 may be formed between the backsurface of the back substrate 111 of the display panel 100 and thebracket 140. The bracket 140 may be attached to the back surface of theback substrate 111 using the adhesive layer 400.

When the bracket 140 is attached to the back surface of the backsubstrate 111 using the adhesive layer 400, a supporting member such asa pem nut and a boss and a fastening member such as a screw are notused. Therefore, a fixing process may be simply performed, themanufacturing cost may be reduced, and the thickness of the displaydevice may be reduced.

A groove 141 may be formed in one surface of the bracket 140 facing theback substrate 111, so as to improve an adhesive strength between thebracket 140 and the back substrate 111. It may be preferable that theadhesive layer 400 is formed in the groove 141. The groove 141 of thebracket 140 may be referred to as a first groove. In this instance,because the groove 141 may prevent from an adhesive material of theadhesive layer 400 from being discharged to the outside of the bracket140, an attaching process may be easily performed.

When the bracket 140 is attached to the back surface of the backsubstrate 111, the display panel 100 may include a portion W1 extendingfurther than the bracket 140 in a longitudinal direction of the displaypanel 100.

As shown in FIG. 5, the groove 141 may include portions having each adifferent depth.

More specifically, the groove 141 of the bracket 140 may includeportions A1 and A2 each having a gradually decreasing or increasingdepth in a width direction WD, so as to further improve the adhesivestrength between the bracket 140 and the back substrate 111 whileefficiently injecting the adhesive material of the adhesive layer 400into the groove 141.

For example, a depth t1 of a middle portion of the groove 141 may bedifferent from a depth t2 of an edge portion of the groove 141. A lengthof the groove 141 in the edge portion of the groove 141 may graduallydecrease.

In other words, the adhesive layer 400 formed in the groove 141 mayinclude portions having each a different thickness. For example, a widthof a middle portion of the adhesive layer 400 may be greater than awidth of an edge portion of the adhesive layer 400.

The bracket 140 may include a portion having different widths. Morespecifically, the bracket 140 may include a portion having differentwidths as measured in the longitudinal direction of the display panel100, i.e., the horizontal direction. In other words, the bracket 140 mayinclude a portion having a gradually deceasing width as the bracket 140goes in the direction away from the display panel 100.

As shown in FIG. 6, the optical layer 110 may be positioned in an innerarea IA of the bracket 140. The display panel 100 may extend in an outerarea OA of the bracket 140.

Preferably, the optical layer 110 may be fixed to the bracket 140 in theinner area IA of the bracket 140. When the optical layer 110 is fixed tothe bracket 140, a portion of the optical layer 110 may overlap thebracket 140. In other words, the portion of the optical layer 110 may bepositioned inside the bracket 140 or contact the bracket 140.

As shown in FIG. 7, a groove 700 may be formed in the bracket 140, so asto fix the optical layer 110 to the bracket 140. The optical layer 110may be fixed to the bracket 140 by inserting the optical layer 110 intothe groove 700. The groove 700 of the bracket 140 used to fix theoptical layer 110 may be referred to as a second groove. The secondgroove 700 may be formed in the side of the bracket 140 and may bedepressed in a direction parallel to the longitudinal direction of thedisplay panel 100.

As shown in FIG. 8, the second groove 700 may have a hook shape, so asto improve a coupling strength between the optical layer 110 and thebracket 140. In this instance, a protrusion 701 corresponding to thesecond groove 700 may be formed in the optical layer 110. The opticallayer 110 may be coupled with the bracket 140 by inserting theprotrusion 701 into the second groove 700.

Alternatively, as shown in FIG. 9, a protrusion 900 may be formed in thebracket 140, a hole 112 may be formed in the optical layer 110, and theprotrusion 900 of the bracket 140 may pass through the hole 112 of theoptical layer 110. Hence, the optical layer 110 may be fixed to thebracket 140.

Alternatively, as shown in FIG. 10, the optical layer 110 may include aguide part 113 capable of passing through the hole 112 and theprotrusion 900 of the bracket 140. The protrusion 900 of the bracket 140may pass through the guide part 113 and may be positioned in the hole112.

As shown in FIG. 11, the light source 120 may be positioned in the rearof the optical layer 110. The light source 120 may be a direct typelight source and also may be an LED module including a plurality of LEDsand a substrate.

As shown in FIG. 12, the light source 120 may be attached to a backsurface of the optical layer 110. For this, an adhesive layer (notshown) may be formed between the optical layer 110 and the light source120.

Alternatively, unlike the structure illustrated in FIG. 12, the lightsource 120 may be separated from the optical layer 110 by apredetermined distance.

As shown in FIG. 13, the back cover 130 may be positioned in the rear ofthe backlight unit and may be fixed to the bracket 140. For this, agroove 1300 may be formed in the bracket 140 and may be depressed in adirection toward the display panel 100. The back cover 130 may be fixedto the bracket 140 by inserting an end of the back cover 130 into thegroove 1300. The groove 1300 of the bracket 140 may be referred to as athird groove.

As shown in FIG. 14, when the back cover 130 is fixed to the bracket140, the back cover 130 and the light source 120 (i.e., the back cover130 and the backlight unit) may be separated from each other by apredetermined distance d1.

An edge of the front surface of the front substrate 101 or an edge ofthe side of the front substrate 101 may be exposed in a state where theback cover 130 is fixed to the bracket 140. The exposure of the edge ofthe front surface of the front substrate 101 may indicate that an edgeof a front surface of the front polarizing film 3400 attached to thefront substrate 101 is exposed.

The exposure of the edge of the front surface of the front substrate 101may indicate that an observer can view the edge of the front surface ofthe front substrate 101 when the observer in the front of the displaypanel 100 views the front surface of the front substrate 101, i.e., whenthe observer in the front of the display panel 100 views the displaypanel 100 in a direction D2. The exposure of the edge of the side of thefront substrate 101 may indicate that the observer can view the edge ofthe side of the front substrate 101 when the observer in the side of thedisplay panel 100 views the front surface of the front substrate 101,i.e., when the observer in the side of the display panel 100 views thedisplay panel 100 in a direction D1.

As above, when the edge of the front surface of the front substrate 101or the edge of the side of the front substrate 101 is exposed after theback cover 130 is fixed to the bracket 140, the front substrate 101 maybe formed of a tempered glass. In this instance, even if the edge of thefront surface of the front substrate 101 or the edge of the side of thefront substrate 101 is exposed, the front substrate 101 may be preventedfrom being damaged by an external impact.

As shown in FIG. 15, a width L2 of the back cover 130 may be less than awidth L1 of the display panel 100. In other words, the width L2 of theback cover 130 may be less than a width of at least one of the frontsubstrate 101 and the back substrate 111 of the display panel 100.

In this instance, when the observer in the front of the display panel100 views the display panel 100, the observer may observe almost theentire area of the display panel 100. Hence, an attractive appearance ofthe display panel 100 may be provided. Further, because another edge ofthe side of the display panel 100 may not be showed to the observer, avisual effect, in which the observer may feel that the screen size ofthe display panel 100 is greater than the real screen size of thedisplay panel 100, may be obtained.

In this instance, the edge of the front surface of the front substrate101 and the edge of the side of the front substrate 101 in each of anupper part ({circle around (1)}) and a lower part ({circle around (2)})of the display panel 100 may be exposed.

It can be seen from FIG. 15 that the optical layer 110 is positioned inthe inner area IA of the bracket 140.

A blocking member 1500 may be positioned at the edge of the frontsurface of the front substrate 101. Preferably, the blocking member 1500may be attached to the edge of the front surface of the front substrate101. Because the blocking member 1500 hides a dummy area positionedoutside an active area of the display panel 100 on which an image isdisplayed, the image displayed on the active area may be moreprominently showed.

The blocking member 1500 may have lightness lower than ambientlightness. For example, the lightness of the blocking member 1500 may belower than lightness of the display panel 100. For this, the blockingmember 1500 may be substantially black. For example, the blocking member1500 may be substantially a black tape and may be formed by attaching ablack tape to the front surface of the front substrate 101. Thus, theblocking member 1500 may be referred to as a black layer.

Because the blocking member 1500 is positioned on the front surface ofthe front substrate 101 and the edge of the front surface of the frontsubstrate 101 is exposed, almost the entire portion of the blockingmember 1500 may be exposed as shown in FIG. 16. In other words, when theobserver in the front of the display panel 100 views the display panel100, the observer may view almost the entire portion of the blockingmember 1500. Namely, the observe may observe almost the entire portionof the blocking member 1500.

Because the bracket 140 does not display the image, it may be preferablethat the bracket 140 is positioned in the dummy area outside the activearea. Further, it may be preferable that the bracket 140 is hidden bythe blocking member 1500. Hence, as shown in FIG. 15, the blockingmember 1500 may overlap the bracket 140. Preferably, the bracket 140 mayentirely overlap the bracket 140. More preferably, widths W10 and W20 ofthe blocking member 1500 may be greater than widths W11 and W12 of thebracket 140. In this instance, the blocking member 1500 may includeportions P1 and P2 extending further than the bracket 140 in a middledirection of the front substrate 101. Further, the blocking member 1500may include portions W1 and W2 extending further than the bracket 140 inthe opposite direction of the middle direction of the front substrate101.

The widths W10 and W20 of the blocking member 1500 and the widths W11and W12 of the bracket 140 may be a width in a cross section of thedisplay panel 100.

As shown in FIG. 17, a frame 1600 may be positioned in the rear of thelight source 120. Namely, the backlight unit may further include theframe 1600. The frame 1600 may improve the structural stability of thebacklight unit and the uniformity of light. Preferably, the frame 1600may be attached to a back surface of the light source 120.

In this instance, the frame 1600 may be fixed to the bracket 140. Morespecifically, as shown in FIG. 18, a receiving part 1700 may be formedon the bracket 140, a coupling hole 1610 may be formed in the frame1600, and a coupling member 1720 may pass through the coupling hole 1610of the frame 1600. Hence, the coupling member 1720 may be fixed to thereceiving part 1700 of the bracket 140. As a result, the frame 1600 maybe fixed to the bracket 140.

Even in this case, as shown in FIG. 19, the light source 120 and theoptical layer 110 may be closely attached to each other.

Alternatively, unlike the structure illustrated in FIG. 19, the lightsource 120 and the optical layer 110 may be separated from each other.

When the frame 1600 is positioned in the rear of the backlight unit, theback cover 130 may be omitted.

Alternatively, when the frame 1600 is positioned in the rear of thebacklight unit, the size of the back cover 130 may be reduced.

As shown in FIG. 20, the back cover 130 may be positioned on a portionof a back surface of the frame 1600. A driving board 1900 may bepositioned between the back cover 130 and the frame 1600 to supply adriving signal to the display panel 100. In this instance, the width L2of the back cover 130 may be less than a width L3 of the frame 1600. Thewidth of the display panel 100, for example, the width L1 of the frontsubstrate 101 may be greater than the width L2 of the back cover 130 andthe width L3 of the frame 1600.

As shown in FIG. 21, the bracket 140 may extend to the side of thedisplay panel 100. Hence, the bracket 140 may include a portion 142positioned on the side of the display panel 100. For example, thebracket 140 may extend to the side of the back substrate 111 of thedisplay panel 100 and thus may include a portion positioned on the sideof the back substrate 111. Alternatively, the bracket 140 may extend tothe side of the front substrate 101 of the display panel 100 and thusmay include a portion positioned on the side of each of the frontsubstrate 101 and the back substrate 111. In FIG. 21, “D10” indicates anextending direction of the bracket 140.

In this instance, the edge of the front surface of the front substrate101 may be exposed, and the edge of the side of the front substrate 101may not be exposed. Hence, the edge of the side of the front substrate101 may be efficiently protected from the external impact.

As shown in FIG. 21, the fact that the edge of the side of the frontsubstrate 101 is hidden by the bracket 140 may mean that when theobserver in the side of the display panel 100 views the front surface ofthe front substrate 101, the observer may recognize that the entire sideor the partial side of the front substrate 101 (or the entire side orthe partial side of the back substrate 111) is hidden by the bracket140.

In other words, the fact that the edge of the side of the frontsubstrate 101 is hidden by the bracket 140 may mean that the bracket 140overlaps the entire side or the partial side of the display panel 100(for example, the entire side or the partial side of the back substrate111 or the entire side or the partial side of the front substrate 101)in the longitudinal direction of the display panel 100.

Further, as shown in FIG. 22, the bracket 140 may extend to the side ofthe display panel 100 and the front surface of the front substrate 101.Hence, the bracket 140 may include the portion 142 positioned on theside of the display panel 100 and a portion 143 positioned on the frontsurface of the front substrate 101. In FIG. 22, “D10” and “D11” indicatean extending direction of the bracket 140. In this instance, a portionof the edge of the front surface of the front substrate 101 may behidden by the bracket 140, but almost the entire front surface of thefront substrate 101 may be exposed.

Even if the bracket 140 hides the portion of the edge of the frontsurface of the front substrate 101, the bracket 140 may not hide theentire edge of the front surface of the front substrate 101. Forexample, as shown in FIG. 23, the bracket 140 may hide a portion of anedge of each of a first long side LS1 and a second long side LS2 of thefront substrate 101. However, edges of a first short side SS1 and asecond short side SS2 of the front substrate 101 may be exposed.

Alternatively, as shown in FIG. 24, the bracket 140 may hide a portionof the edge of each of the first short side SS1 and the second shortside SS2 of the front substrate 101. However, the edges of the firstlong side LS1 and the second long side LS2 of the front substrate 101may be exposed.

Alternatively, as shown in FIG. 25, the bracket 140 may hide a portionof the edge of each of the first long side LS1, the second long sideLS2, the first short side SS1, and the second short side SS2 of thefront substrate 101. However, even in this case, almost the entire frontsurface of the front substrate 101 may be exposed.

The above-described structure illustrated in FIGS. 22 to 25 may beapplied to the structure of the display device in which an auxiliarybracket 2300 is added. Namely, the auxiliary bracket 2300 may replacethe bracket 140 in the structure illustrated in FIGS. 22 to 25.

As shown in FIG. 26, when the bracket 140 extends to the front surfaceof the front substrate 101, the bracket 140 may include a portion P3overlapping the blocking member 1500 on the front surface of the frontsubstrate 101. In this instance, the bracket 140 may hide a portion ofthe blocking member 1500. The overlap portion P3 between the bracket 140and the blocking member 1500 may contact the blocking member 1500.

Even when the bracket 140 hides the portion of the blocking member 1500,the size of the overlap portion P3 between the bracket 140 and theblocking member 1500 may be less than the size of a non-overlap portionbetween the bracket 140 and the blocking member 1500. For example, thesize of the portion P3 of the blocking member 1500 hidden by the bracket140 may be less than the size of a portion W100 of the blocking member1500 that is not hidden by the bracket 140 and is exposed.

Further, as shown in FIG. 27, the bracket 140 may hide a portion of theblocking member 1500 in the first long side LS1 and the second long sideLS2 of the front substrate 101. However, the blocking member 1500 maynot be hidden by the bracket 140 and may be exposed in the first shortside SS1 and the second short side SS2 of the front substrate 101.

Alternatively, as shown in FIG. 28, the bracket 140 may hide a portionof the blocking member 1500 in the first short side SS1 and the secondshort side SS2 of the front substrate 101. However, the blocking member1500 may not be hidden by the bracket 140 and may be exposed in thefirst long side LS1 and the second long side LS2 of the front substrate101.

Alternatively, as shown in FIG. 29, the bracket 140 may hide a portionof the blocking member 1500 in the first long side LS1, the second longside LS2, the first short side SS1, and the second short side SS2 of thefront substrate 101. However, even in this case, most of the blockingmember 1500 may be exposed.

The above-described structure illustrated in FIGS. 26 to 29 may beapplied to the structure of the display device in which the auxiliarybracket 2300 is added. Namely, the auxiliary bracket 2300 may replacethe bracket 140 in the structure illustrated in FIGS. 26 to 29. In theembodiment disclosed herein, the bracket 140 may be referred to as afirst bracket, and the auxiliary bracket 4800 may be referred to as asecond bracket.

As shown in FIG. 30, the auxiliary bracket 2300 may be positionedbetween the bracket 140 and the back cover 130. When the auxiliarybracket 2300 is used, a design of the display device may be easilychanged by changing the shape of the auxiliary bracket 2300 exposed tothe outside without changing the shape of the bracket 140. Morespecifically, the connection structure of the back cover 130 may beeasily changed using the auxiliary bracket 2300 without changing thelocation structure of the optical layer 110 or the backlight unit.Namely, the external shape such as the connection structure of the backcover 130 may be easily changed without changing the basic structure ofthe display device.

One side of the auxiliary bracket 2300 may be fixed to the bracket 140,and the other side of the auxiliary bracket 2300 may be fixed to theback cover 130. In other word, auxiliary bracket 2300 provided adjacentto the brackets 140.

The auxiliary bracket 2300 may have a groove 2310, that is depressed ina direction toward the bracket 140, so as to fix the back cover 130 tothe auxiliary bracket 2300. An end of the back cover 130 may be insertedinto the groove 2310. The groove 2310 of the auxiliary bracket 2300 usedto fix the back cover 130 may be referred to as a fourth groove.

When the back cover 130 is fixed to the auxiliary bracket 2300, the backcover 130 and the light source 120 (i.e., the back cover 130 and thebacklight unit) may be separated from each other by a predetermineddistance. This structure may be substantially the same as the structureillustrated in FIGS. 14 and 15, in which the back cover 130 fixed to thebracket 140 and the backlight unit are separated from each other by thepredetermined distance.

Even when the back cover 130 is fixed to the auxiliary bracket 2300, theedge of the front surface of the front substrate 101 or the edge of theside of the front substrate 101 may be exposed. This structure wasdescribed above with reference to FIGS. 14 and 15.

As shown in FIG. 31, the display panel 100 may include a portion W200extending further than the auxiliary bracket 2300 in the longitudinaldirection.

The bracket 140 and the auxiliary bracket 2300 may be coupled with eachother using a predetermined coupling member. For example, as shown inFIG. 32, the bracket 140 may have a groove 144 used to couple with theauxiliary bracket 2300, and the auxiliary bracket 2300 may have a hole2320 for a coupling member 2400. In this instance, the coupling member2400 such as a screw may pass through the hole 2320 of the auxiliarybracket 2300 and may be fixed to the groove 144 of the bracket 140. Thegroove 144 of the bracket 140 may be referred to as a fifth groove.

As shown in FIG. 33, the auxiliary bracket 2300 may include a portion2330 positioned on the side of the display panel 100.

More specifically, the auxiliary bracket 2300 may extend to the side ofthe display panel 100. For example, the auxiliary bracket 2300 mayextend to the side of the back substrate 111 of the display panel 100and thus may include a portion positioned on the side of the backsubstrate 111. Alternatively, the auxiliary bracket 2300 may extend tothe side of the front substrate 101 of the display panel 100 and thusmay include a portion positioned on the side of the front substrate 101.

As shown in FIG. 34, the auxiliary bracket 2300 may extend to the sideof the display panel 100 and the front surface of the front substrate101. Hence, the auxiliary bracket 2300 may include the portion 2330positioned on the side of the display panel 100 and a portion 2340positioned on the front surface of the front substrate 101.

In this instance, the partial edge of the front surface of the frontsubstrate 101 may be hidden by the auxiliary bracket 2300, but almostthe entire front surface of the front substrate 101 may be exposed.

Even when the auxiliary bracket 2300 hides the partial edge of the frontsurface of the front substrate 101, all of the edges of the frontsurface of the front substrate 101 may not be hidden by the auxiliarybracket 2300. This structure may be substantially the same as thestructure illustrated in FIGS. 23B to 25.

Further, when the auxiliary bracket 2300 extends to the front surface ofthe front substrate 101, the auxiliary bracket 2300 may include aportion P4 overlapping the blocking member 1500 on the front surface ofthe front substrate 101. In this instance, the auxiliary bracket 2300may hide a portion of the blocking member 1500. The overlap portion P4between the auxiliary bracket 2300 and the blocking member 1500 maycontact the blocking member 1500.

Even when the auxiliary bracket 2300 hides the portion of the blockingmember 1500, a size of the overlap portion P3 between the auxiliarybracket 2300 and the blocking member 1500 may be less than a size of anon-overlap portion between the auxiliary bracket 2300 and the blockingmember 1500. The structure of the auxiliary bracket 2300 may besubstantially the same as the structure illustrated in FIGS. 27 to 29.

The bracket 140 may be divided into a plurality of parts. For example,as shown in FIG. 35, the bracket 140 may include first brackets 140A1and 140A2 and second brackets 140B1 and 140B2.

The first brackets 140A1 and 140A2 may be respectively attached to longsides LS1 and LS2 of the back surface of the back substrate 111 of thedisplay panel 100. The second brackets 140B1 and 140B2 may berespectively attached to short sides SS1 and SS2 of the back surface ofthe back substrate 111.

The first brackets 140A1 and 140A2 may be separated from the secondbrackets 140B1 and 140B2 by a predetermined distance d10. Preferably,the first brackets 140A1 and 140A2 and the second brackets 140B1 and140B2 may be separated from each other in the corner of the back surfaceof the back substrate 111. In this instance, a process for attaching thefirst brackets 140A1 and 140A2 and the second brackets 140B1 and 140B2to the back substrate 111 may be easily performed, and the manufacturingcost of the bracket 140 may be reduced. Hence, the manufacturing cost ofthe display device may be reduced.

The optical layer 110 may be fixed to the first brackets 140A1 and140A2, the second brackets 140B1 and 140B2, or both. For example, asshown in FIG. 36, the optical layer 110 may be fixed to the firstbrackets 140A1 and 140A2 and may not be fixed to the second brackets140B1 and 140B2. In other words, the optical layer 110 may overlap orcontact the first brackets 140A1 and 140A2. The optical layer 110 maynot overlap the second brackets 140B1 and 140B2 and may be separatedfrom the second brackets 140B1 and 140B2 by a predetermined distance.

In this instance, widths A10 of the first brackets 140A1 and 140A2 maybe different from widths A20 of the second brackets 140B1 and 140B2.Preferably, as shown in FIG. 37, the widths A10 of the first brackets140A1 and 140A2 fixed to the optical layer 110 may be greater than thewidths A20 of the second brackets 140B1 and 140B2. Because the opticallayer 110 is not fixed to the second brackets 140B1 and 140B2, thewidths A20 of the second brackets 140B1 and 140B2 may be less than thewidths A10 of the first brackets 140A1 and 140A2.

Alternatively, as shown in FIG. 38, the optical layer 110 may be fixedto the first brackets 140A1 and 140A2 and the second brackets 140B1 and140B2. Even in this case, the widths A10 of the first brackets 140A1 and140A2 may be greater than the widths A20 of the second brackets 140B1and 140B2. Hence, the first brackets 140A1 and 140A2 longer than thesecond brackets 140B1 and 140B2 may mainly support the optical layer110.

The first brackets 140A1 and 140A2 may be connected to the secondbrackets 140B1 and 140B2 using a predetermined connecting part. Forexample, as shown in FIG. 39, a connecting part 3100 may be positionedbetween the first brackets 140A1 and 140A2 and the second brackets 140B1and 140B2 and may be connected to the first brackets 140A1 and 140A2 andthe second brackets 140B1 and 140B2 using a predetermined couplingmember 3110. Hence, the first brackets 140A1 and 140A2 may be connectedto the second brackets 140B1 and 140B2.

As shown in FIG. 40, the first brackets 140A1 and 140A2 and the secondbrackets 140B1 and 140B2 may fouls an integral body. In this instance, aportion of the bracket 140 positioned at the long sides LS1 and LS2 ofthe back substrate 111 may be referred to as a first bracket, and aportion of the bracket 140 positioned at the short sides SS1 and SS2 ofthe back substrate 111 may be referred to as a second bracket. Even inthis case, the widths A10 of the first brackets 140A1 and 140A2 may begreater than the widths A20 of the second brackets 140B1 and 140B2.

As shown in FIG. 41, the single auxiliary bracket 2300 may be connectedto the first brackets 140A1 and 140A2 and the second brackets 140B1 and140B2. In this instance, an empty space may be provided between thefirst brackets 140A1 and 140A2 and the second brackets 140B1 and 140B2in a state where the single auxiliary bracket 2300 is connected to thefirst brackets 140A1 and 140A2 and the second brackets 140B1 and 140B2.

As shown in FIG. 42, a width L10 of the front polarizing film 3400positioned on the front surface of the front substrate 101 may bedifferent from a width L11 of the back polarizing film 3410 positionedon the back surface of the back substrate 111. The width L10 of thefront polarizing film 3400 and the width L11 of the back polarizing film3410 may be a width in the cross section of the display panel 100.

Preferably, the width L10 of the front polarizing film 3400 may begreater than the width L11 of the back polarizing film 3410. In otherwords, an end of at least one side of the front polarizing film 3400 mayextend further than the back polarizing film 3410.

More specifically, as shown in FIG. 43, the front polarizing film 3400may include a portion A30 overlapping the bracket 140. The bracket 140may be separated from the back polarizing film 3410 by a predetermineddistance d11 in a direction parallel to the longitudinal direction ofthe back substrate 111. In this instance, the bracket 140 may bedirectly attached to the back substrate 111. Hence, an adhesive strengthbetween the bracket 140 and the back substrate 111 may be improved.

Further, the front polarizing film 3400 may be separated from an end ofthe front surface of the front substrate 101 by a predetermined distanced12. In this instance, a process for attaching the front polarizing film3400 to the front substrate 101 may be easily performed, and theproduction yield may be improved.

As shown in FIG. 44, the blocking member 1500 may overlap the frontpolarizing film 3400. For example, the blocking member 1500 may includea portion positioned on the front polarizing film 3400.

Further, the front polarizing film 3400 may include a portion Y1extending further than the blocking member 1500 in an outside directionof the display panel 100. FIG. 44 shows that the blocking member 1500 ispositioned on the front polarizing film 3400. However, the blockingmember 1500 may be positioned between the front polarizing film 3400 andthe front substrate 101. Even in this instance, the front polarizingfilm 3400 may include the portion Y1 extending further than the blockingmember 1500 in the outside direction of the display panel 100.

Alternatively, as shown in FIG. 45, the blocking member 1500 may includea portion Y2 extending further than the front polarizing film 3400 inthe outside direction of the display panel 100. In this instance, theblocking member 1500 may contact both the front polarizing film 3400 andthe front substrate 101.

FIG. 45 shows that the blocking member 1500 is positioned on the frontpolarizing film 3400. However, the blocking member 1500 may bepositioned between the front polarizing film 3400 and the frontsubstrate 101. Even in this case, the blocking member 1500 may includethe portion Y2 extending further than the front polarizing film 3400 inthe outside direction of the display panel 100.

As shown in FIG. 46, the blocking member 1500 and the front polarizingfilm 3400 may be positioned on the same layer level. In this instance,the blocking member 1500 may be positioned outside the front polarizingfilm 3400.

As shown in FIG. 47, when the bracket 140 is separated from the backpolarizing film 3410 by the predetermined distance d11 in the directionparallel to the longitudinal direction of the back substrate 111, an airlayer 3600 may be formed between the bracket 140 and the frontpolarizing film 3400 in a state where the optical layer 110 ispositioned inside the bracket 140.

When the auxiliary bracket 2300 includes a portion positioned on theside of the display panel 100, the front polarizing film 3400 and theauxiliary bracket 2300 may be separated from each other by apredetermined distance d22 on the front surface of the front substrate101. This may be equally applied to the structure in which the auxiliarybracket 2300 is not used and the bracket 140 includes a portionpositioned on the side of the display panel 100.

As shown in (a) and (b) of FIG. 48, the short sides SS1 and SS2 of thefront substrate 101 may extend further than the short sides SS1 and SS2of the back substrate 111, and the long sides LS1 and LS2 of the frontsubstrate 101 may extend further than the long sides LS1 and LS2 of theback substrate 111.

For example, the first short side SS1 of the front substrate 101 mayextend further than the first short side SS1 of the back substrate 111corresponding to the first short side SS1 of the front substrate 101 bya first length S1. The second short side SS2 of the front substrate 101may extend further than the second short side SS2 of the back substrate111 corresponding to the second short side SS2 of the front substrate101 by a second length S2.

The first length S1 may be substantially equal to the second length S2.Alternatively, the first length S1 may be different from the secondlength S2. In this instance, the structure of the first short side SS1of the front substrate 101 may be different from the structure of thesecond short side SS2 of the front substrate 101.

For example, a sufficient space may be provided in the first short sideSS1 of the back substrate 111, so as to mount a gate driver on the firstshort side SS1 of the back substrate 111 corresponding to the firstshort side SS1 of the front substrate 101. In this instance, the firstlength S1 may be less than the second length S2.

Further, the first long side LS1 of the front substrate 101 may extendfurther than the first long side LS1 of the back substrate 111corresponding to the first long side LS1 of the front substrate 101 by alength S10. The second long side LS2 of the front substrate 101 mayextend further than the second long side LS2 of the back substrate 111corresponding to the second long side LS2 of the front substrate 101 bya length S20. The length S10 and the length S20 may be different fromeach other.

When the long sides LS1 and LS2 and the short sides SS1 and SS2 of thefront substrate 101 extend further than the long sides LS1 and LS2 andthe short sides SS1 and SS2 of the back substrate 111, respectively, adistance X1 between the front substrate 101 and the auxiliary bracket2300 may be different from a distance X2 between the back substrate 111and the auxiliary bracket 2300 as shown in FIG. 49. Preferably, thedistance X1 may be less than the distance X2.

This may be equally applied to the structure in which the auxiliarybracket 2300 is not used and the bracket 140 includes the portionpositioned on the side of the display panel 100.

At least one of a gate driver for supplying a driving signal to the gatelines and a data driver for supplying a driving signal to the data linesmay be mounted outside the back substrate 111. The gate driver mayinclude a plurality of gate driver integrated circuits (ICs), and thedata driver may include a plurality of source driver ICs.

For example, as shown in FIG. 50, a gate driver 3900 and a data driver3910 may be formed on the back substrate 111. The fact that the gatedriver 3900 and the data driver 3910 are formed on the back substrate111 may mean that circuit elements required to drive the gate driver3900 and circuit elements required to drive the data driver 3910 aredirectly patterned on the back substrate 111 through semiconductormanufacturing processes.

It may be preferable that the gate driver 3900 and the data driver 3910are formed on the back substrate 111 in a dummy area DA positionedoutside an active area AA on which the image is displayed.

In this instance, because circuit elements required to display the imagemay be directly formed on the back substrate 111, the number or the sizeof circuit boards positioned outside may be reduced. Hence, the size orthe thickness of the display device may be further reduced.

As shown in FIG. 51, when the long sides and the short sides of thefront substrate 101 extend further than the long sides and the shortsides of the back substrate 111, the gate driver 3900 and the datadriver 3910 may be formed in an area OVA commonly overlapping the frontsubstrate 101 and the back substrate 111.

The first transistor 103, for example, the first TFT 103 capable ofturning on or off the liquid crystals in each pixel may be formed on theback substrate 111. The gate driver 3900 or the data driver 3910 mayinclude a second transistor that is positioned in the area OVA commonlyoverlapping the front substrate 101 and the back substrate 111 outsidethe seal portion 200. Namely, the first transistor 103 may be positionedinside the seal portion 200, and the second transistor may be positionedin the area OVA commonly overlapping the front substrate 101 and theback substrate 111 outside the seal portion 200.

As shown in FIG. 52, a first gate driver 3900A may be positioned in anoverlap area between the front substrate 101 and the back substrate 111outside the seal portion 200 on the first short side SS1 of the backsubstrate 111. A second gate driver 3900B may be positioned in anoverlap area between the front substrate 101 and the back substrate 111outside the seal portion 200 on the second short side SS2 of the backsubstrate 111. In this instance, the first length S1 may besubstantially equal to the second length S2.

As shown in FIG. 53, the data driver 3910 may be positioned in anoverlap area between the front substrate 101 and the back substrate 111outside the seal portion 200 on the second long side LS2 of the backsubstrate 111. The data driver may not be positioned in an overlap areabetween the front substrate 101 and the back substrate 111 outside theseal portion 200 on the first long side LS1 of the back substrate 111.In this instance, the length S20 may be greater than the length S10.

In this instance, as shown in FIG. 54, a pad electrode 4300 may beformed in an overlap area between the front substrate 101 and the backsubstrate 111 outside the seal portion 200 on the second long sides LS2of the front substrate 101 and the back substrate 111. The pad electrode4300 may be used in an electrical connection of the driving board 1900for supplying the driving signal to a transistor.

For example, the driving board 1900 for supplying the driving signal tothe display panel 100 may be positioned outside the display panel 100,for example, between the frame 1600 and the back cover 130.

In this instance, a connector 4310 may be positioned on the drivingboard 1900. One terminal of a connection substrate 4320 including anelectrode 4330 may be connected to the connector 4310, and the otherterminal may be connected to the pad electrode 4300. Hence, the drivingboard 1900 and the pad electrode 4300, more specifically, the drivingboard 1900 and the data driver 3910 may be electrically connected toeach other. The connection substrate 4320 may be a flexible substratesuch as a tape carrier package (TCP) and a flexible printed circuit(FPC).

As above, the connection substrate 4320 may be connected to the padelectrode 4300 in a formation portion of the pad electrode 4300. Thelength of the front substrate 101 may be greater than the length of theback substrate 111, so that the connection substrate 4320 is not seen inthe front of the display panel 100. In other words, when the padelectrode 4300 is formed on the second long side LS2 of the backsubstrate 111, the length S20 may be greater than the length S10.

As shown in FIG. 55, a first pad electrode 4300A and a second padelectrode 4300 b may be formed outside the seal portion 200 on thesecond long side LS2 of the back substrate 111. A first connectionsubstrate 4320A may be electrically connected to the first pad electrode4300A, and a second connection substrate 4320B may be electricallyconnected to the second pad electrode 4300B.

A first transfer line 4400 may be formed between the first pad electrode4300A and the gate driver 3900 to transfer a driving signal, that isreceived from a driving board (not shown) through the first connectionsubstrate 4320A, to the gate driver 3900. A second transfer line 4410may be formed between the second pad electrode 4300B and the data driver3910 to transfer a driving signal, that is received from a driving board(not shown) through the second connection substrate 4320B, to the datadriver 3910.

As shown in FIG. 56, the seal portion 200 positioned between the frontsubstrate 101 and the back substrate 111 may be formed in the dummy areapositioned outside the active area AA of the display panel 100 on whichthe image is displayed. Hence, the seal portion 200 may overlap theblocking member 1500.

The active area AA may be formed in an area overlapping the opticallayer 110 positioned in the inner area IA of the bracket 140. Hence, itmay be preferable that the seal portion 200 for sealing the liquidcrystal layer 104 is positioned in the inner area IA of the bracket 140.More specifically, the seal part 200 may be separated from the bracket140 by a predetermined distance C1 in the longitudinal direction of theback substrate 111.

Alternatively, as shown in FIG. 57, the seal part 200 may include aportion 201 positioned in the inner area IA of the bracket 140 and aportion 202 overlapping the bracket 140. In this instance, the liquidcrystal layer 104 may be securely sealed by sufficiently increasing thewidth of the seal portion 200. Hence, the structure stability of theliquid crystal layer 104 may be improved.

As shown in FIG. 58, the blocking member 1500 may be positioned on theback surface of the front substrate 101.

When the length of the front substrate 101 is greater than the length ofthe back substrate 111 by a predetermined length C10, the blockingmember 1500 may be positioned on the back surface of the front substrate101. In this instance, the blocking member 1500 positioned on the backsurface of the front substrate 101 may be prevented from being exposedto the front surface of the front substrate 101 while hiding the backsubstrate 111 positioned outside the seal portion 200. Hence, a goodappearance of the display device may be provided.

The end of the front substrate 101 may extend further than the blockingmember 1500 in the outside direction of the display panel 100 by apredetermined distance, so as to easily perform an attaching process ofthe blocking member 1500 and increase the production yield and theblocking efficiency. The blocking member 1500 may extend further thanthe end of the back substrate 111 by a predetermined distance C20.

The back cover 130 and the auxiliary bracket 2300 are coupled with eachother using a coupling member.

For example, as shown in FIG. 59, the bracket 140 and the auxiliarybracket 2300 may be coupled with each other using the first couplingmember 2400, and the back cover 130 and the auxiliary bracket 2300 maybe coupled with each other using a second coupling member 4700. Thestructure of the first coupling member 2400 and the coupling methodusing the first coupling member 2400 were described above.

A hole 4710 may be formed in the back cover 130, and a hole 4720corresponding to the hole 4710 of the back cover 130 may be formed inthe auxiliary bracket 2300. In this instance, the second coupling member4700 may pass through the hole 4710 of the back cover 130 and then maybe fixed to the hole 4720 of the auxiliary bracket 2300. Hence, the backcover 130 may be fixed to the auxiliary bracket 2300.

As shown in FIG. 60, the first coupling member 2400 may couple thebracket 140 with the auxiliary bracket 2300, and the second couplingmember 4700 may couple the back cover 130 with the auxiliary bracket2300.

FIGS. 61 to 72 illustrate another configuration of a display deviceaccording to an example embodiment of the invention. Structures andcomponents identical or equivalent to those illustrated in FIGS. 1 to 60are designated with the same reference numerals, and a furtherdescription may be briefly made or may be entirely omitted.

As shown in FIG. 61, a display device according to another exampleembodiment of the invention may include a display panel 100, a backlightunit including an optical layer 110 and a light source 120, a back cover130, and a bracket 140.

An active retarder 14 may be positioned in the front of the displaypanel 100, thereby causing a 3D image to be displayed on the displaypanel 100. The active retarder 14 may be attached to a front surface ofthe display panel 100 using a transparent adhesive or may be coupledwith the front surface of the display panel 100 using a structure.

The active retarder 14 controls a tilting angle of liquid crystals,first-circularly polarizes light coming from the display panel 100, andtransmits the first circularly polarized light. Alternatively, theactive retarder 14 controls a tilting angle of liquid crystals,second-circularly polarizes light coming from the display panel 100, andtransmits the second circularly polarized light. The first circularlypolarized light and the second circularly polarized light areperpendicular to each other. A left eye image and a right eye image arealternately displayed on the display panel 100 every one frame. Theactive retarder 14 first-circularly polarizes the left eye image andsecond-circularly polarizes the right eye image in synchronization thedisplay timing.

A left eye glass of glasses a viewer uses includes a first circularpolarizing filter, and a right eye glass of the glasses includes asecond circular polarizing filter. Hence, the viewer views only thefirst circularly polarized left eye image through his or her left eyeand views only the second circularly polarized right eye image throughhis or her right eye. As a result, the display device according to theembodiment of the invention implements a binocular disparity in a timedivision driving manner, thereby displaying the 3D image.

A filter 12 may be positioned in the front of the display panel 100.Preferably, the filter 12 may be laminated on the front surface of thedisplay panel 100. The filter 12 may be exposed to the outside and mayprotect the display panel 100 forming an external appearance from amechanical damage such as a scratch. The filter 12 may include an opaquelayer 12 a positioned at an edge of the filter 12 and a transparentlayer 12 b positioned inside the filter 12. The opaque layer 12 a ispositioned at a location substantially corresponding to a non-displayarea (i.e., a dummy area) of the display panel 100, and the transparentlayer 12 b is positioned at a location substantially corresponding to anactive area of the display panel 100. The transparent layer 12 b may beomitted in the filter 12.

The opaque layer 12 a prevents the bracket 140 from being seen outsidethe display panel 100. Further, because the opaque layer 12 a has as thesame color as the bracket 140, when the display panel 100 is turned off,the display panel 100 and the bracket 140 looks like one part. In otherwords, because the user perceives the display panel 100 and the bracket140 as one part, the opaque layer 12 a may make the display panel 100look larger than its actual size. The opaque layer 12 a may be theblocking member.

The bracket 140 supports the display panel 100 and receives thebacklight unit inside the bracket 140. The bracket 140 has a rectangularplane shape suitable for the shape of the display panel 100 and has agroove 13 a formed in an inner wall thereof. A portion (i.e., one end)of the edge of the display panel 100 is received into the groove 13 a ofthe bracket 140 and is fixed to the bracket 140. The optical layer 110and the light source 120 are closely stacked in the rear of the bracket140 with the bracket 140 interposed between the display panel 100 andthe optical layer 110 and the light source 120.

The optical layer 110 may include a prism sheet 15 a and a diffusionplate 15 b. The optical layer 110 transfers light from the light source120 to the display panel 100, thereby causing the image to be displayedon the display panel 100.

The back cover 130 may be formed of iron material, so as to improve thestructural stability. The back cover 130 is coupled with the bracket 140with the optical layer 110 and the light source 120 interposed betweenthe back cover 130 and the bracket 140.

FIG. 62 is a cross-sectional view taken along line II-IP of FIG. 61.More specifically, FIG. 62 illustrates a coupling configuration of thedisplay device.

As shown in FIG. 62, one end of the display panel 100 is received in thegroove of the bracket 140, and the display panel 100 is fixed to thebracket 140 using an adhesive member 16. The bracket 140 may include agroove 141 in which an adhesive member 400 is positioned. The displaypanel 100 may be coupled with the bracket 140 with the same height ‘h’.

The light source 120 may include a light emitting unit 17 a and asupport plate 1600. The light emitting unit 17 a may have a direct typestructure in which light sources, for example, light emitting diodes aremounted on a substrate. The support plate 1600 is a structure forstructurally supporting the light emitting unit 17 a and may be formedof aluminum with the good rigidity or iron material such as a steelsheet. The light emitting unit 17 a is fixed to the support plate 1600using an adhesive or a structure such as a bolt coupling. The supportplate 1600 may be a frame.

One end of the support plate 1600 is fixed to the bracket 140 through ascrew coupling between the support plate 1600 and a boss 13 b of thebracket 140. The optical layer 110 is closely positioned and fixedbetween the light source 120 and the display panel 100. One end of theoptical layer 110 may be fixed to the bracket 140 using an adhesive or aprotrusion provided in the bracket 140, so as to prevent a movement ofthe optical layer 110. Furthermore, a fixer (not shown) for fixing thebracket 140 and the optical layer 110 is positioned between the bracket140 and the optical layer 110. The fixer may remove a space between thebracket 140 and the optical layer 110, thereby fixing the optical layer110.

FIG. 63 illustrates another configuration of the bracket 140 in whichthe bracket 140 surrounds the edge of the display panel 100. As shown inFIG. 63, the bracket 140 surrounds the edge of the display panel 100 andextends to the inside of the display panel 100. In this instance, it ispreferable that the bracket 140 hides only the non-display area (i.e.,the dummy area) of the display panel 100.

FIG. 64 illustrates that the bracket 140 and one end of the displaypanel 100 are disposed on the same line. As shown in FIG. 64, thebracket 140 and one end of the display panel 100 are disposed on thesame line, and the bracket 140 and the display panel 100 are coupledwith each other using an adhesive or a screw coupling.

FIG. 65 illustrates that the bracket 140 is divided into a first portion131 and a second portion 133. As shown in FIG. 65, the bracket 140 mayinclude the first portion 131 surrounding the edge of the display panel100 and the second portion 133 for fixing the display panel 100. Thesecond portion 133 reduces a space between the light source 120 and theoptical layer 110, that are positioned inside the second portion 133,and supports the light source 120 and the optical layer 110 so that thelight source 120 and the optical layer 110 do not move.

FIG. 66 illustrates that the light source 120 is fixed using a supportpin 23. One end 23 a of the support pin 23 is fixed to the bracket 140through a screw coupling, and the other end 23 b of the support pin 23surrounds the light source 120 and extends to the bottom of the lightsource 120. Hence, the light source 120 is fixed by the elastic force ofthe support pin 23.

As above, when the support pin 23 is used, the support plate 1600 usedto support the light source 120 may be omitted. Therefore, a thicknessof the backlight unit may be reduced.

FIG. 67 illustrates an edge type backlight unit having a structuredifferent from the above-described direct type backlight unit. Namely,the edge type backlight unit may include an edge type light source.

As shown in FIG. 67, the optical layer 110 may further include a lightguide plate 15 c and a reflection plate 15 d.

The light guide plate 110 c guides light coming from the side of thelight sources, thereby causing the light to be uniformly incident on theentire surface of the display panel 100. The reflection plate 110 dreflects light travelling toward a bottom surface of the reflectionplate 110 d on a front surface of the reflection plate 110 d on whichthe display panel 100 is formed.

The light guide plate 110 c and the reflection plate 110 d aresequentially stacked and are fixed using the support pin 23. One end ofthe support pin 23 is screw-coupled with the bracket 140, and the otherend extends to the bottom of the reflection plate 110 d. Hence, theoptical layer 110 may be supported and fixed by the elastic force of thesupport pin 23.

A backlight unit 31 includes a light emitting diode 31 b serving as alight source and a substrate 31 a on which the light emitting diode 31 bis mounted. The size of the substrate 31 a and the number of lightemitting diodes 31 b may vary. The backlight unit 31 may be fixed to areceiving groove 131 a using an adhesive. The receiving groove 131 a mayprevent a leakage of light. The receiving groove 131 a may be omitted asshown in FIG. 68.

The thickness of the module having the edge-type backlight unit may beless than the thickness of the module having the direct type backlightunit.

As shown in FIG. 69, a display device according to another exampleembodiment of the invention includes a display panel 61, a first bracket63, a second bracket 64, an optical layer 65, a backlight unit 67, and aback cover 69.

The display panel 61 displaying an image is exposed to a front surfaceof the display device to form an external appearance of the displaydevice. A filter 62 including a transparent 62 a and an opaque layer 62b and an active retarder 66 making a 3D image may be selectivelypositioned in the front of the display panel 61.

The first bracket 63 supports the display panel 61 and receives theoptical layer 65 and the backlight unit 67 therein. The first bracket 63has a

-shape in which a lower portion of the first bracket 63 is open, so thatthe first bracket 63 can support three portions of the display panel 61.A recess is formed in an inside wall of the first bracket 63 andsupports the display panel 61.

The optical layer 65 and the backlight unit 67 are sequentially stackedand closely positioned in the rear of the display panel 61 with thefirst bracket 63 interposed between the display panel 61 and the opticallayer 65 and the backlight unit 67.

The second bracket 64 is positioned under a module.

FIG. 70 is a cross-sectional view taken along line X-X′ of FIG. 69. Morespecifically, FIG. 70 illustrates a lower coupling configuration of thedisplay device including the second bracket 64.

As shown in FIG. 70, the second bracket 64 is positioned under themodule to form an external appearance of the display device. It ispreferable that the second bracket 64 under the module is positionedclose to the display panel 61, and the second bracket 64 and the surfaceof the display panel 61 are positioned on the same line. When the secondbracket 64 and the surface of the display panel 61 are positioned on thesame line, a boundary between the second bracket 64 and the displaypanel 61 does not disappear. Hence, the display panel 100 may looklarger than its actual size, and the design of the display device may beimproved.

An electrode 711 for sensing changes in a capacitance may be formed onan inside surface of one end of the display panel 61. The electrode 711may be formed of a transparent conductive material and may have adiamond cell structure of a lattice shape. When the user indirectlytouches the electrode 711 with the display panel 61 interposed betweenthe user and the electrode 711, a capacitance at a touch positionvaries. The capacitance at the touch position is then transferred to acontroller 713. A row coordinate and a column coordinate of the touchedelectrode lattice are read, and the touch position is understood. Thecontroller 713 generates a control signal corresponding to the touchposition and thus may control an operation of the display device. Thecontroller 713 turns up or down the volume of the display device basedon the touch position and thus may control an operation of the displaydevice.

It is preferable that only one of the upper substrate and the lowersubstrate exists and an electrode is formed on a back surface of theremaining substrate, so as to increase the touch sensitivity of theelectrode 711.

The controller 713 connected through above-described electrode 711serving as a touch sensor and a signal line 715, a speaker 71, a remotecontrol receiving module (not shown), etc. may be positioned inside thesecond bracket 64. The display device having the slim structure may bemanufactured by disposing the functional modules inside the secondbracket 64. Hence, the space of the display device may be efficiencyused.

The second bracket 64 may be screw-coupled with the back cover 69 andmay be fixed to the back cover 69. As shown in FIG. 60, the secondbracket 64 may be fixed to the side of the first bracket 63 using anadhesive in a state where the first bracket 63 extends to the side 641of the second bracket 64. The second bracket 64 may be coupled with thefirst bracket 63 and the back cover 69.

FIG. 72 illustrate that the second bracket 64 includes the protrusion641 extending to the inner of the display panel 61. As shown in FIGS. 71and 72, the protrusion 641 extends along a longitudinal direction of thesecond bracket 64, surrounds a lower part of the display panel 61, andis positioned on the display panel 61. It is preferable that theprotrusion 641 is positioned so as to hide only the non-display area ofthe display panel 61. As above, because the protrusion 641 surrounds anend portion of the display panel 61 corresponding to a structural weakportion, the protrusion 641 protects the display panel 61 and prevents apollution material such as dust from penetrating into the display panel61. As above, the second bracket 64 under the display panel 61 may covera portion of the front surface of the display panel 61. Thus, the secondbracket 64 may be referred to as a bottom cover.

FIGS. 73 to 75 illustrate an exemplary configuration of a light sourcemodule of the backlight unit. In the following description, thedescriptions of the configuration and the structure described above areomitted.

As shown in FIG. 73, an optical assembly 6101 of a backlight unitincludes a first layer 6110, a plurality of light sources 6120, and asecond layer 6130.

The plurality of light sources 6120 are formed on the first layer 6110,and the second layer 6130 is formed on the first layer 6110 to cover theplurality of light sources 6120.

The first layer 6110 may be a substrate on which the light sources 6120are mounted. An electrode pattern (not shown) for connecting the lightsources 6120 is formed on the first layer 6110. The first layer 6110 maybe a metal printed circuit board (PCB) obtained by forming an insulatinglayer using a metal such as aluminum in which electric current does notflow.

The light sources 6120 may be one of a light emitting diode (LED) chipand a LED package having at least one LED chip. It is preferabelt thatthe light sources 6120 are a side view type LED package in which a lightemitting surface is formed to face the side surface. The light sources6120 emit red, green, and blue light, or may emit white light.

The second layer 6130 is formed on the first layer 6110 to cover thelight sources 6120. The second layer 6130 transmits and diffuses lightemitted from the light sources 6120, thereby causing the light sources220 to uniformly provide the light to the display panel.

A reflection layer 6140 for reflecting the light from the light sources6120 may be formed between the first layer 6110 and the second layer6130, more particularly, on the first layer 6110. The reflection layer6140 again reflects light totally reflected from a boundary between thesecond layer 6130 and the reflection layer 6140, thereby more widelydiffusing the light emitted from the light sources 6120.

The reflection layer 6140 may use a sheet in which a white pigment, forexample, titanium oxide is dispersed, a sheet in which a metaldeposition layer is stacked on the surface of the sheet, a sheet inwhich bubbles are dispersed so as to scatter light, etc. among varioustypes of sheets formed of synthetic resin material. The surface of thereflection layer 6140 may be coated with silver (Ag) so as to increase areflectance. The reflection layer 6140 may be coated on the first layer6110. The second layer 6130 may be formed of a light transmissivematerial, i.e., silicon or an acrylic resin. Other materials may be usedfor the second layer 6130.

The second layer 6130 may be formed of a resin, that is capable ofdiffusing the light from the light sources 6120 and has a refractiveindex of approximately 1.4 to 1.6, so that the optical assembly 6101 hasthe uniform luminance.

The second layer 6130 may be formed by applying and curing a liquid orgel-type resin on the first layer 6110 and the plurality of lightsources 6120. Alternatively, the second layer 6130 may be separatelyfabricated and then may be attached on the first layer 6110.

As a thickness of the second layer 6130 increases, the second layer 6130more widely diffuses the light emitted from the light sources 6100.Hence, the light sources 6100 may provide the light having the uniformluminance to the display panel. On the other hand, as the thickness ofthe second layer 6130 increases, an amount of light absorbed in thesecond layer 6130 increases. Hence, the luminance of light which theoptical assembly 6101 provides to the display panel may entirelydecrease. Accordingly, the thickness of the second layer 6130 may beapproximately 0.1 mm to 4.5 mm, so that the backlight unit 6100 canprovide light having the uniform luminance to the display panel withouta reduction in the luminance.

As shown in FIG. 74, the side view type LEDs 6120 are positioned. TheLEDs 6120 emit light in a side direction. Thus, the LEDs 6120 arearranged in two or more lines, so that the optical assembly 6101provides the light having the uniform luminance. The LEDs 6120 arrangedon the same line emit light in the same direction.

For example, the adjacent light sources 6120 positioned on the left andright sides of the first light source 6120 emit light in the samedirection (in an arrow direction in FIG. 74) as the first light source6120. The adjacent light sources 6121 positioned on the left and rightsides of the second light source 6121 emit light in the oppositedirection of the first light source 6120.

As above, because the LEDs 6120 and 6121 emit light in the oppositedirections along the line, the luminance of light may be prevented frombeing concentrated or reduced in a predetermined region of the opticalassembly 6101.

The optical assemblies 6101 thus formed may form a light source module6100. The light source module 6100 may be driven in a global dimmingmethod, a local dimming method, an impulsive driving method, or otherdriving methods.

For example, the light source module 6100 may be divided into aplurality of driving regions and may operate. The display quality, forexample, the contrast ratio and the clarity of the image may be improvedby driving the light source module 6100 so that luminances of thedriving regions of the light source module 6100 are equal to a luminanceof an image signal. Accordingly, the light source module 6100 may bemanufactured by assembling a plurality of components. For example, asshown in FIG. 75, the light source module 6100 may be manufactured usingthe plurality of optical assemblies 6101. In this instance, only some ofthe optical assemblies 6101 may be independently driven to providelight. For this, light sources 6120 included in each of the opticalassemblies 6101 may be independently controlled.

A region of the display panel corresponding to one optical assembly 6101may be divided into two or more blocks, and the display panel and thelight source module 6100 may be separately driven by the unit of ablock. As above, when the light source module 6100 is configured usingthe plurality of optical assemblies 6101, a manufacturing process of thelight source module 6100 may be simplifed and a loss generated in themanufacturing process may be minimized. Further, the light source module6100 has an advantage applicable to backlight units having various sizesthrough mass production by standardizing the optical assemblies 6101.

Furthermore, when some of the LEDs included in the light source module6100 have a failure, only the optical assembly having the failure hasonly to be replaced without replacing the light source module 6100.Therefore, a replacing work may be easily performed and the partreplacement cost may be saved.

FIGS. 76 to 91 illustrate another configuration of a display deviceaccording to an example embodiment of the invention. In the followingdescription, the descriptions of the configuration and the structuredescribed above are omitted.

As shown in FIG. 76, the optical layer 110 may not be fixed to thebracket 140 and may be placed on one surface of the bracket 140. In thisinstance, the optical layer 110 may move on the bracket 140.

The shape of the bracket 140 shown in FIG. 76 is different from theshape of the bracket 140 described above. However, the bracket 140 shownin FIG. 4 may be applied to the structure illustrated in FIG. 76. Inother words, the embodiment of the invention does not limit the shape ofthe bracket 140.

Because the structure illustrated in FIG. 76 may be implemented throughthe simple process for disposing the optical layer 110 on the bracket140, the manufacturing process may be simplified.

As above, when the optical layer 110 is placed on the bracket 140, theoptical layer 110 may be separated from the back substrate 111 of thedisplay panel 100 by a predetermined distance Z1. Hence, as shown inFIG. 77, an air gap 6500 may be formed between the back substrate 111and the optical layer 110.

As above, when the air gap 6500 is formed between the back substrate 111and the optical layer 110, the optical characteristics of the displaydevice may be improved by the air gap 6500.

As shown in FIG. 78, a fixing part 6600 may be disposed on one surfaceof the bracket 140, and the optical layer 110 may be disposed on thefixing part 6600. The fixing part 6600 may have a shape protruding inthe direction away from the display panel 100.

As above, when the optical layer 110 is disposed on the fixing part6600, the size of a contact surface between the optical layer 110 andthe fixing part 6600 may be relatively small. Therefore, a damage of theoptical layer 110 may be prevented.

The fixing part 6600 contacting the optical layer 110 may be tender thanthe bracket 140, so as to suppress the movement of the optical layer 110and to sufficiently prevent the damage of the optical layer 110. Forexample, the fixing part 6600 may contain polyurethane.

A light guide plate 7000 may be disposed in the rear of the opticallayer 110. In this instance, the backlight unit may include an edge typelight source, the optical layer 110, the light guide plate 7000, and aframe. When the backlight unit includes the light guide plate 7000, theedge type light source may be disposed on the side of the light guideplate 7000.

A maximum height Z2 of the optical layer 110 may be less than a heightZ3 of the bracket 140 as measured from the back surface of the backsubstrate 111, so as to prevent the movement of the optical layer 110.

When the light guide plate 7000 is disposed in the rear of the opticallayer 110, a maximum height Z4 of the light guide plate 7000 may be lessthan the height Z3 of the bracket 140 as measured from the back surfaceof the back substrate 111, so as to prevent the movement of the lightguide plate 7000.

As shown in FIG. 79, the fixing part 6600 may have a stripe shape. Inthis instance, one fixing part 6600 may be disposed on one bracket 140.

Alternatively, as shown in FIG. 80, the plurality of fixing parts 6600may be formed. Namely, the plurality of fixing parts 6600 may bedisposed on one bracket 140. In this instance, the size of a contactsurface between the optical layer 110 and the fixing part 6600 may befurther reduced.

As shown in FIG. 81, the frame 1600 may be disposed in the rear of theoptical layer 110. The frame 1600 may be fixed to the bracket 140. Forexample, the bracket 140 may include a protrusion 145 protruding in adirection D30 away from the display panel 100, and the frame 1600 may beconnected to the protrusion 145. In this instance, although not shown,the frame 1600 may be connected to the protrusion 145 of the bracket 140using a fastening member such as a screw.

In other word, the bracket 140 has a recess (A groove) on a firstsurface where the adhesive for adhesive layer 400 is applied. And thebracket has a first protrusion 145 extending from a second surface. Inthis instance, the first and second surfaces 1000FS, 1000SS beingopposite surface.

In the structure illustrated in FIG. 81, when the direct type lightsource is installed, the light source 120 may be disposed between theframe 1600 and the optical layer 110.

As shown in FIG. 82, when the edge type light source is installed, thelight guide plate 7000 may be disposed between the frame 1600 and theoptical layer 110 and an edge type backlight unit 7010 may be disposedon the side of the light guide plate 7000. The edge type backlight unit7010 may include a substrate 7011 and a light source 7012 such as an LEDdisposed on the substrate 7011.

The display device according to the embodiment of the invention mayinclude the edge type backlight unit 7010 or the direct type backlightunit. In other words, when there are no comments, both the edge typebacklight unit and the direct type backlight unit may be applied to thedisplay device according to the embodiment of the invention.

As shown in FIG. 83, the back cover 130 may be disposed in the rear ofthe frame 1600. The back cover 130 may be fixed to the bracket 140. Forexample, the back cover 130 may be fixed to the protrusion 145 of thebracket 140 using a predetermined fastening member (not shown).Preferably, the frame 1600 may be connected to one side of theprotrusion 145 of the bracket 140, and the back cover 130 may beconnected to the other side of the protrusion 145. In this instance, aportion of the frame 1600 and a portion of the back cover 130 may bepositioned opposite each other with the bracket 140 interposedtherebetween.

As shown in FIG. 84, a driving board 7210 for supplying a driving signalto the display panel 100 may be disposed between the frame 1600 and theback cover 130.

Further, an air gap 7200 may be formed between the frame 1600 and theback cover 130. The air gap 7200 may provide a space for disposing thedriving board 7210 between the frame 1600 and the back cover 130.

In the embodiment disclosed herein, the air gap 6500 formed between theback substrate 111 and the optical layer 110 is referred to as a firstair gap, and the air gap 7200 formed between the frame 1600 and the backcover 130 is referred to as a second air gap. A thickness Z5 of thesecond air gap 7200 may be greater than a thickness Z1 of the first airgap 6500.

As shown in FIG. 85, the auxiliary bracket 2300 may be connected to thebracket 140, and the back cover 130 may be fixed to the auxiliarybracket 2300. Preferably, a groove 2310 may be formed in the auxiliarybracket 2300, and an end of the back cover 130 may be inserted into thegroove 2310 of the auxiliary bracket 2300.

Preferably, as shown in FIG. 86, the end of the back cover 130 may beinserted into the groove 2310 of the auxiliary bracket 2300 in a statewhere the end of the back cover 130 rolls. In this instance, thecoupling strength between the auxiliary bracket 2300 and the back cover130 may be improved. The auxiliary bracket 2300 may be firmly connectedto the back cover 130 without using a fastening member such as a screw.

The edge of the back cover 130 may roll in the direction toward themiddle of the display panel 100, so as to prevent a foreign materialfrom being penetrated into the display device, increase theproductivity, and provide the attractive appearance of the displaydevice.

The shape of the auxiliary bracket 2300 shown in FIG. 86 may bedifferent from the shape of the auxiliary bracket 2300 shown in FIGS. 30and 31. However, the auxiliary bracket 2300 shown in FIGS. 30 and 31 maybe applied to the structure illustrated in FIG. 86. In other words, theshape of the auxiliary bracket 2300 is not limited in the embodiment ofthe invention.

As shown in FIGS. 86 and 87, the auxiliary bracket 2300 may include aportion 2330 positioned on the side of the display panel 100. Thus, theauxiliary bracket 2300 may be referred to as a side cover. Consideringthis, the side cover 2300 may include a first portion 2330 parallel tothe width direction (i.e., a vertical direction DRV) of the displaypanel 100 and a second portion 2300A which is connected to the firstportion 2330 and is positioned parallel to the longitudinal direction(i.e., a horizontal direction DRH) of the display panel 100. Further, anend of the back cover 130 may be positioned in the second portion 2300Aof the side cover 2300. A height of a groove 2310 of the side cover 2300may be lower than the peripheral height. In other words, the secondportion 2300A may include a low altitude part 2310 (i.e., the groove2310), whose a height measured from the back surface of the backsubstrate 111 is lower than a maximum height of the first portion 2330.

The bracket 140 may be separated from the auxiliary bracket 2300 by apredetermined distance Z10 in a longitudinal direction D31 of thedisplay panel 100. Namely, an air gap may be formed between the bracket140 and the auxiliary bracket 2300 in the longitudinal direction D31 ofthe display panel 100. In other words, the bracket 140 may be separatedfrom the side cover 2300 in the longitudinal direction D31 of thedisplay panel 100. Hence, the attractive appearance of the displaydevice may be provided, and the entire weight of the display device maybe reduced. Further, because the auxiliary bracket 2300 is preventedfrom contacting the display panel 100, the damage of the display panel100 may be prevented.

In other word, the auxiliary bracket 2300 includes a sidewall 2330 andan overhang portion 2300A extending in the horizontal direction DRH afirst end portion of the sidewall 2330 covers the sides of the front andback substrates 101, 111. And, the overhang portion 2300A being providedat the second end portion of the side wall 2330 which opposite from thefirst end portion of the side wall 2330.

As shown in FIG. 88, when the optical layer 110 is positioned on thebracket 140, the bracket 140 may include a portion 142 positioned on theside of the display panel 100.

Alternatively, as shown in FIG. 89, the back cover 130 may extend to theside of the display panel 100. Namely, the back cover 130 may include aportion 132 positioned on the side of the display panel 100.

As shown in FIG. 90, the side of the adhesive layer 400 disposed betweenthe back substrate 111 and the bracket 140 may be exposed. In thisinstance, the width of the adhesive layer 400 may increase, and thus theadhesive strength of the adhesive layer 400 may increase.

The adhesive layer 400 may be formed by coating an adhesive materialbetween the back substrate 111 and the bracket 140. Alternatively, theadhesive layer 400 may be formed by attaching an adhesive sheet betweenthe back substrate 111 and the bracket 140. For example, the adhesivelayer 400 may be formed using a double sided adhesive tape as theadhesive sheet.

As shown in FIG. 91, a thickness Z11 of the front substrate 101 may bedifferent from a thickness Z10 of the back substrate 111.

Because the edge of the front surface of the front substrate 101 may beexposed in the display device according to the embodiment of theinvention, the thickness Z11 of the front substrate 101 may increase soas to prevent the damage of the front substrate 101. In this instance,the thickness Z11 of the front substrate 101 may be greater than thethickness Z10 of the back substrate 111.

FIGS. 92 to 104 illustrate another configuration of a display deviceaccording to an example embodiment of the invention. In the followingdescription, the descriptions of the configuration and the structuredescribed above are omitted.

As shown in FIG. 92, the bracket 140 may be positioned in the dummy areaDA outside the active area AA of the display panel 100. Hence, thebracket 140 may not overlap the display panel 100 in the width directionof the display panel 100. Namely, the bracket 140 is separated from anend P10 of the active area AA of the display panel 100 by apredetermined distance F2. As above, the screen distortion may beprevented by disposing the bracket 140 at a position separated from theactive area AA of the display panel 100 by the predetermined distanceF2.

If the user views the image displayed on the display panel in thedirection oblique to the screen of the display panel, the image in aboundary between the active area AA and the dummy area DA may bedistorted. However, when the bracket 140 is disposed at a positionseparated from the active area AA of the display panel 100 by thepredetermined distance F2 as in the embodiment of the invention, thescreen distortion may be prevented.

A distance F1 between the back substrate 111 and the optical layer 110may vary depending on the distance F2 between the end P10 of the activearea AA of the display panel 100 and the bracket 140.

As shown in FIG. 92, the distance F2 between a position P10 where aboundary line BL between the active area AA and the dummy area DA meetsthe back substrate 111 of the display panel 100 (i.e., the end P10 ofthe active area AA of the display panel 100) and the bracket 140 may beequal to or less than the distance F1 between the back substrate 111 andthe optical layer 110. In this instance, the size of the dummy area DA,on which the image is not displayed, may be prevented from excessivelyincreasing.

Further, when a normal line TL, which starts at the end P10 of theactive area AA of the display panel 100 and meets the bracket 140, isdrawn in FIG. 92, an angle θ1 between the normal line TL and theboundary line BL may be set to about 15° to 30°, so as to moreefficiently prevent the screen distortion in the boundary between theactive area AA and the dummy area DA and to prevent an excessiveincrease in the size of the dummy area DA.

There are various methods for dividing the display panel 100 into theactive area AA and the dummy area DA.

For example, as shown in FIG. 93, the display panel 100 may be dividedinto the active area AA and the dummy area DA by the seal part 200between the front substrate 101 and the back substrate 111. Morespecifically, the area outside the seal part 200 may be assigned as thedummy area DA, and the area inside the seal part 200 may be assigned asthe active area AA. In other words, the display panel 100 may be dividedinto the active area AA and the dummy area DA based on the inner surfaceof the cross section of the seal part 200, i.e., the surface contactingthe liquid crystal layer 104.

Other methods may be used to divide the display panel 100 into theactive area AA and the dummy area DA.

For example, as shown in FIG. 94, the active area AA may be positionedinside the seal part 200.

More specifically, a plurality of transistors 103 may be positionedinside the seal part 200. A first transistor 103A, which is the closestto the seal part 200 in the plurality of transistors 103, may be alwaysmaintained in an off-state irrespective of image data. Second, third,and fourth transistors 103B, 103C, and 103D, which are closer to themiddle of the display panel 100 than the first transistor 103A, mayperform turn-on and turn-off operations depending on the image data.

In this instance, a boundary line BL may be positioned between the firsttransistor 103A and the second transistor 103B. Namely, the displaypanel 100 may be divided into the dummy area DA and the active area AAby the first transistor 103A and the second transistor 103B.

Alternatively, as shown in FIG. 95, the display panel 100 may be dividedinto the dummy area DA and the active area AA using an outermost pixelamong a plurality of pixels 8300, which receives the data and displaysthe image, as a boundary.

As shown in FIG. 96, the light guide plate 7000 on the optical layer 110may protrude further than the optical layer 110 by a predetermineddistance F3 in the outer direction of the display panel 100.

In this instance, as shown in FIG. 97, a total length L30 of the lightguide plate 7000 may be longer than a total length L31 of the opticallayer 110.

As above, when the total length L30 of the light guide plate 7000 islonger than the total length L31 of the optical layer 110, the length ofthe optical layer 110 may be reduced while preventing the screendistortion in the boundary between the active area AA and the dummy areaDA. Hence, the manufacturing cost may be reduced.

As shown in FIG. 96, because the optical layer 110 is disposed under thelight guide plate 7000, the normal line TL, which passes through the endP10 of the active area AA of the display panel 100 and meets the bracket140, may pass through both the optical layer 110 and the light guideplate 7000 even if the length of the optical layer 110 is short.

As shown in FIG. 98, a width W3 of the bracket 140 may be greater than awidth W4 of the adhesive layer 400. In this instance, the bracket 140may include a groove 141, and the adhesive layer 400 may be formed inthe groove 141 of the bracket 140.

A distance W5 (hereinafter, referred to as a first distance W5) betweenone end of the groove 141 and one end of the bracket 140 in thedirection D34 toward the middle of the display panel 100 may be lessthan a width W4 of the groove 141 based on the groove 141 of the crosssection of the bracket 140.

Further, a distance W6 (hereinafter, referred to as a second distanceW6) between another end of the groove 141 and another end of the bracket140 in the direction D35 away from the middle of the display panel 100may be less than the width W4 of the groove 141 based on the groove 141of the cross section of the bracket 140.

In this instance, because the size of the groove 141 of the bracket 140may increase, the adhesive strength between the bracket 140 and the backsubstrate 111 may be improved.

Further, a sum (W5+W6) of the first distance W5 and the second distanceW6 may be less than the width W4 of the groove 141. In this instance,because the size of the groove 141 of the bracket 140 may furtherincrease, the adhesive strength between the bracket 140 and the backsubstrate 111 may be further improved.

The first distance W5 may be equal to or less than the second distanceW6. In this instance, the distance between the end P10 of the activearea AA of the display panel 100 and the bracket 140 may increase whilemaintaining the strength of the bracket 140. Hence, the screendistortion may be further prevented.

A width W4 of the adhesive layer 400 may be greater than a thickness W7of the adhesive layer 400. In this instance, the adhesive strengthbetween the bracket 140 and the back substrate 111 may be improved.

The adhesive layer 400 may be formed using an UV adhesive or an adhesiveof polyurethane material.

An example of forming the adhesive layer 400 using the UV adhesive isdescribed below.

FIG. 99 is a graph indicating a shear strength (SST) measured when thethickness of the adhesive layer 400 formed of the UV adhesive is about25 μm to 450 μm. In FIG. 99, the adhesive layer 400 was formed byirradiating UV light having an intensity of 4500±1500 mJ/cm² onto the UVadhesive.

As shown in FIG. 99, when the thickness of the adhesive layer 400 formedof the UV adhesive is about 200 μm to 300 μm, the shear strength had amaximum value.

Thus, it may be preferable that when the adhesive layer 400 is formed ofthe UV adhesive, the thickness of the adhesive layer 400 is about 200 μmto 300 μm.

An example of forming the adhesive layer 400 using the adhesive ofpolyurethane material is described below.

FIG. 100 is a graph indicating a shear strength (SST) measured when thethickness of the adhesive layer 400 formed of the adhesive ofpolyurethane material is about 0.1 mm to 2.5 mm. In FIG. 100, curingtime of the adhesive layer 400 was about 15 hours, and the pressure wasabout 1 kg/cm².

As shown in FIG. 100, when the thickness of the adhesive layer 400formed of the adhesive of polyurethane material is about 0.4 mm to 1.0mm, the shear strength had a maximum value.

Thus, it may be preferable that when the adhesive layer 400 is formed ofthe adhesive of polyurethane material, the thickness of the adhesivelayer 400 is about 0.4 mm to 1.0 mm.

As shown in FIG. 101, one surface of the bracket 140 may have the shapeof an oblique line. For example, the side surface of the cross sectionof the bracket 140 in the direction D34 toward the middle of the displaypanel 100 may have the shape of the oblique line when viewed from theback substrate 111.

In this instance, the distance F2 between the end P10 of the active areaAA of the display panel 100 and the bracket 140 in an area where thebracket 140 is adjacent to the back substrate 111 may be less than thedistance F2 in an area where the bracket 140 is adjacent to the opticallayer 110. Namely, the distance F2 may decrease as it goes from the backsubstrate 111 to the optical layer 110. Thus, because the block of lightresulting from the bracket 140 may be reduced, the screen distortion maybe reduced.

Further, while the normal line TL shown in FIG. 92 contacts the bracket140, the normal line TL shown in FIG. 101 does not contact the bracket140. In this instance, as shown in FIG. 101, a height of the crosssection of the bracket 140 may gradually decrease as the bracket 140goes to the middle direction D34 of the display panel 100. Morespecifically, the height of the cross section of the bracket 140 maygradually decrease from T11 to T10 as the bracket 140 goes to the middledirection D34 of the display panel 100.

As shown in FIG. 102, the adhesive layer 400 may overlap the opticallayer 110 in the width direction of the display panel 100. A reason whythe adhesive layer 400 may overlap the optical layer 110 is because oneside of the bracket 140 may have the shape of the oblique line and thebracket 140 may move close to the middle of the display panel 100.

As shown in FIG. 102, a first portion F5 of the bracket 140 overlappingthe optical layer 110 in the width direction of the display panel 100may include a second portion F6, whose a height TB gradually decreasesas it goes in the middle direction D34 of the display panel 100. Thesecond portion F6 may overlap a portion F7 of the adhesive layer 400 inthe width direction of the display panel 100.

A width of the second portion F6 may be less than the shortest distanceF2 between the end P10 of the active area of the display panel 100 andthe bracket 140, so as to reduce the screen distortion and to prevent anexcessive increase in the size of the dummy area DA.

Alternatively, as shown in FIG. 103, the second portion F6 of thebracket 140 does not overlap the adhesive layer 400 in the widthdirection of the display panel 100 and may be separated from theadhesive layer 400 by a predetermined distance F8.

Alternatively, as shown in FIG. 104, one side of the bracket 140 mayhave a step shape.

Hereinafter, an image display using the display device according to theembodiment of the invention is described. In the following description,the descriptions of the configuration and the structure described aboveare omitted.

The image display equipment disclosed herein is a smart image displayequipment to which a computer assisted function is added depending on abroadcast receiving function. Thus, the smart image display equipmentmay faithfully perform the broadcast receiving function and also mayperform an internet function. The smart image display equipment may beequipped with a user-friendly interface, such as an input device drivenby a manual operation, a touch screen, or a spatial remote controller.The smart image display equipment may be connected to the internet andthe computer by the support of wired/wireless internet function and thusmay perform e-mail, web browsing, banking, games, etc. The standarduniversal operating system (OS) may be used for various functionsdisclosed herein.

Accordingly, because various applications may be freely added to oromitted in universal OS kernel in the image display equipment disclosedherein, various user-friendly functions may be performed. The imagedisplay equipment may be a network TV, HBBTV, and a smart TV, forexample. If necessary, the image display equipment may be applied tosmartphones.

FIG. 105 schematically illustrates an example of a broadcasting systemincluding an image display equipment according to an example embodimentof the invention.

As shown in FIG. 105, a broadcasting system including an image displayequipment according to the embodiment of the invention may be dividedinto a content provider 10Q, a service provider 20Q, a network provider30Q, and HNED 40Q. For example, the HNED 40Q corresponds to a client100Q being the image display equipment according to the embodiment ofthe invention. The client 100Q corresponds to the image displayequipment according to the embodiment of the invention. The imagedisplay equipment is a network TV, a smart TV, IPTV, etc.

The content provider 10Q manufactures various contents and providesthem. As shown in FIG. 105, examples of the content provider 10Q includeterrestrial broadcaster, cable system operator (SO), multiple systemoperator (MSO), satellite broadcaster, and interne broadcaster. Thecontent provider 10Q may provide various applications in addition tobroadcasting contents.

The service provider 20Q may configure the contents provided by thecontent provider 10Q as a service package and may provide the servicepackage.

The network provider 30Q may provide a network for providing the serviceto the client 100Q. The client 100Q may construct Home Network End User(HNED) and may be provided with the service.

The client 100Q may provide the contents through the network. In thisinstance, unlike the configuration described above, the client 100Q maybe a content provider, and the content provider 10Q may receive thecontents from the client 100Q. Further, interactive content service ordata service is available.

FIG. 106 illustrates another example of an image display equipmentaccording to an example embodiment of the invention.

As shown in FIG. 106, an image display equipment 100Q according to theembodiment of the invention may include a broadcasting receiving unit105Q, an external device interface 135Q, a storage unit 140Q, a userinput interface 150Q, a controller 170Q, a display unit 180Q, an audiooutput unit 185Q, a power supply unit 190Q, and a photographing unit(not shown). The broadcasting receiving unit 105Q may include a tuner110Q, a demodulator 120Q, and a network interface 130Q.

The demodulator 120Q receives a digital IF signal converted by the tuner110Q and performs a demodulating operation.

The demodulator 120Q performs the demodulating operation and a channeldecoding operation and then may output a stream signal. The streamsignal may be a multiplexed signal of an image signal, a voice signal,and a data signal.

The stream signal output by the demodulator 120Q may be input to thecontroller 170Q. The controller 170Q performs demultiplexing,image/voice signal processing, etc. Then, the controller 170Q outputs animage to the display unit 180Q and outputs a voice to the audio outputunit 185Q.

The external device interface 135Q may connect an external device to theimage display equipment 100Q. For this, the external device interface135Q may include an audio-visual (AV) input/output unit (not shown) or awireless communication unit (not shown).

The external device interface 135Q may be connected to an externaldevice, such as a digital versatile disk (DVD), a blu-ray disc (BD), agaming device, a camera, a camcorder, and a computer (or notebook), inwired/wireless manner. The external device interface 135Q transfers theimage, the voice, or the data signal received from the outside to thecontroller 170Q of the image display equipment 100Q through the externaldevice connected to the external device interface 135Q. The image, thevoice, or the data signal processed by the controller 170Q may output tothe external device connected to the external device interface 135Q. Forthis, the external device interface 135Q may include the AV input/outputunit (not shown) or the wireless communication unit (not shown).

The AV input/output unit may include an USB terminal, a composite videobanking sync (CVBS) terminal, a component terminal, a S-video (analog)terminal, a digital visual interface (DVI) terminal, a high definitionmultimedia interface (HDMI) terminal, a RGB terminal, a D-SUB terminal,etc., so that the image signal and the voice signal of the externaldevice can be input to the image display equipment 100Q.

The short-range wireless communication unit may perform near fieldcommunication with other electronic equipments. The image displayequipment 100Q may be network-connected with other electronic equipmentsaccording to communication standard, such as Bluetooth, Radio FrequencyIdentification (RFID), Infrared Data Association (IrDA), Ultra Wideband(UWB), ZigBee, and Digital Living Network Alliance (DLNA).

The network interface 130Q provides an interface for connecting theimage display equipment 100Q to a wired/wireless network including aninternet network. The network interface 130Q may have an ethernetterminal, for example, for connecting the image display equipment 100Qto the wired network. Further, the network interface 130Q may usecommunication standards such as WLAN (Wireless LAN) (Wi-Fi), Wirelessbroadband (Wibro), World Interoperability for Microwave Access (Wimax),and High Speed Downlink Packet Access (HSDPA) for connecting the imagedisplay equipment 100Q to the wireless network.

The network interface 130Q may transmit or receive the data to or fromanother user or another electronic equipment through a network connectedto the network interface 130Q or another network linked to the connectednetwork. In particular, the network interface 130Q may transmit aportion of content data stored in the image display equipment 100Q tothe user or the electronic equipment selected among other users or otherelectronic equipments previously registered in the image displayequipment 100Q.

The storage unit 140Q may store a program for the signal processing ofthe controller 170Q and the control operation of the controller 170Q andmay store the processed image signal, the processed voice signal, or thedata signal.

FIG. 106 illustrates the image display equipment separately includingthe storage unit 140Q and the controller 170Q. Other configurations maybe used for the image display equipment. For example, the controller170Q may include the storage unit 140Q.

The user input interface 150Q transfers the signal the user inputs tothe controller 170Q or transfers the signal received from the controller170Q to the user.

For example, the user input interface 150Q may receive and process thecontrol signal indicating the turn-on or turn-off operation, the channelselection, the screen setting, etc. from a remote controller 200Q basedon various communication manners such as a RF communication manner andan infrared communication manner. Alternatively, the user inputinterface 150Q may operate so that the control signal from thecontroller 170Q is transmitted to the remote controller 200Q.

For example, the user input interface 150Q may transfer the controlsignal, which is input from a power key, a channel key, a volume key, alocal key, etc., to the controller 170Q.

Further, for example, the user input interface 150Q may transfer thecontrol signal input from a sensing unit (not shown) for sensing theuser's gestures to the controller 170Q and may transmit the signal fromthe controller 170Q to the sensing unit. The sensing unit may include atouch sensor, a voice sensor, a position sensor, a motion sensor, etc.

The controller 170Q may perform the demultiplexing processing on thestream input through the tuner 110Q, the demodulator 120Q, or theexternal device interface 135Q or may perform the processing ofdemultiplexed signals, thereby generating or outputting the signals foroutputting the image or the voice.

The image signal processed by the controller 170Q may be input to thedisplay unit 180Q and may display an image corresponding to the imagesignal. Further, the image signal processed by the controller 170Q maybe input to an external output device through the external deviceinterface 135Q.

The voice signal processed by the controller 170Q may be output to theaudio output unit 185Q. Further, the voice signal processed by thecontroller 170Q may be input to the external output device through theexternal device interface 135Q.

The display unit 180Q may convert the image signal, the data signal, andan OSD signal, which are processed by the controller 170Q, or the imagesignal and the data signal which are received from the external deviceinterface 135Q, into red, green, and blue signals and may generate adriving signal.

The display unit 180Q may be a PDP, a LCD panel, an OLED display panel,a flexible display panel, a 3D display panel, etc.

The display unit 180Q may be configured as a touch screen and may beused as an input device in addition to an output device.

The audio output unit 185Q may receive the voice signal (for example,stereo signal, 3.1 channel signal, or 5.1 channel signal) processed bythe controller 170Q and may output the voice. The audio output unit 185Qmay be implemented as various types of speakers.

As described above, the image display equipment 100Q may further includea sensing unit (not shown) including at least one of a touch sensor, avoice sensor, a position sensor, and a motion sensor, so as to sense theuser's gestures. The signal sensed by the sensing unit may betransferred to the controller 170Q through the user input interface150Q.

The power supply unit 190Q supplies the power required in all of thecomponents of the image display equipment 100Q.

The image display equipment 100Q disclosed herein may be a fixed imagedisplay equipment. Further, the image display equipment 100Q may be adigital broadcasting receiver capable of receiving at least one of ATSCtype (8-VSB type) digital broadcasting, DVB-T type (COFDM type) digitalbroadcasting, and ISDB-T type (BST-OFDM type) digital broadcasting.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the scope of the principles of thisdisclosure. More particularly, various variations and modifications arepossible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims. In addition to variations and modifications inthe component parts and/or arrangements, alternative uses will also beapparent to those skilled in the art.

What is claimed is:
 1. A display device comprising: a display panelincluding a front substrate and a back substrate; a backlight unitdisposed in a rear of the display panel, the backlight unit including anoptical layer positioned in rear of the display panel; a plurality ofbrackets attached to a non-display area of a back surface of the displaypanel, each of the plurality of brackets including a first portiondisposed on a rear surface of the display panel and a second portionprotruded from the first portion in a vertical direction; a grooveformed on a first surface of the first portion of the bracket facing therear surface of the display panel; and an adhesive layer disposed in thegroove, wherein the second portion of the bracket is protruded from asecond surface opposite to the first surface of the first portion in thevertical direction, and wherein a normal line passes through aborderline between an active area and a dummy area of the display panel,meets the bracket and passes through the optical layer.
 2. The displaydevice of claim 1, further comprising a light guide plate positioned inrear of the optical layer, wherein the normal line passes through boththe optical layer and the light guide plate.
 3. The display device ofclaim 1, wherein a first distance between an end of the groove and anend of the bracket in a direction toward a middle of the display panelis less than a width of the groove.
 4. The display device of claim 3,wherein a second distance between an end of the groove and an end of thebracket in a direction away from the middle of the display panel is lessthan the width of the groove.
 5. The display device of claim 4, whereinthe second distance is equal to or greater than the first distance. 6.The display device of claim 4, wherein a sum of the first distance andthe second distance is less than the width of the groove.
 7. The displaydevice of claim 1, wherein a width of the groove is greater than onehalf of a width of the bracket in a longitudinal direction of thedisplay panel.
 8. The display device of claim 1, wherein a width of theadhesive layer is greater than a thickness of the adhesive layer.
 9. Thedisplay device of claim 1, wherein the backlight unit further includes:a frame in rear of the light guide plate; and a light source positionedon a side of the light guide plate.
 10. The display device of claim 9,wherein a distance between the back substrate and the optical layer isequal to or greater than a distance between an end of the active area ofthe display panel and the bracket.
 11. The display device of claim 1,wherein an edge of at least one side of a front surface of the displaypanel is exposed.
 12. The display device of claim 11, wherein an edge ofanother side of the front surface of the display panel is hidden by apredetermined structure.
 13. The display device of claim 1, furthercomprising a first polarizing film attached to the front substrate and asecond polarizing film attached to the back substrate, wherein theplurality of brackets and the second polarizing film are separated fromeach other on the back surface of the display panel.
 14. The displaydevice of claim 13, wherein the plurality of brackets overlap the firstpolarizing film.
 15. The display device of claim 13, wherein an end ofat least one side of the first polarizing film extends further than thesecond polarizing film.
 16. The display device of claim 13, wherein anend of at least one side of the front substrate extends further than theback substrate.
 17. The display device of claim 13, wherein the displaypanel further includes a blocking member positioned at an edge of afront surface of the front substrate.
 18. The display device of claim17, wherein a width of the blocking member is greater than a width ofeach of the plurality of brackets.
 19. The display device of claim 17,wherein the blocking member overlaps the plurality of brackets.
 20. Adisplay device comprising: a display panel having a first substrate anda second substrate, the display panel having an active area and a dummyarea, and a borderline point is a point on a surface of the secondsubstrate between the active area and the dummy area; a backlight uniton the display panel, the backlight unit including an optical layer onthe display panel; a plurality of brackets attached to a non-displayarea of the surface of the second substrate, at least one bracketincluding a first bracket portion on the surface of the second substrateand a second bracket portion to protrude from a first surface of thefirst bracket portion in a vertical direction; a groove on a secondsurface of the first bracket portion facing the surface of the secondsubstrate; and an adhesive layer in the groove, wherein a normal lineextends from the borderline through the optical layer and to thebracket.